Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'wsmss' = '"<SYSTEM32>\wmup.exe"'
Malicious functions:
Creates and executes the following:
- %TEMP%\mss\svhost.exe
- %TEMP%\mss\wmservices.exe
- %TEMP%\mss\wsmsss.exe
- <SYSTEM32>\wmup.exe
- %TEMP%\mss\rnns.exe
- %TEMP%\mss\Wup.exe /shtml "LS.html" /sort "WebBrowser" /sort "URL"
Executes the following:
- <SYSTEM32>\cmd.exe /c ""%TEMP%\8.tmp\rnns.bat" "
- <SYSTEM32>\cmd.exe /c ""%TEMP%\7.tmp\rnns.bat" "
Modifies file system :
Creates the following files:
- %TEMP%\mss\%USERNAME%lm.html
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\Up[1].dateN
- %TEMP%\mss\Up.dateN
- %TEMP%\mss\wmservices.exe
- %TEMP%\7.tmp\rnns.bat
- %TEMP%\mss\LS.html
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\checkip.dyndns[1].2009427459
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\checkip.dyndns[1].0352750653
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\whatismyip[1].810983863
- %TEMP%\8.tmp\rnns.bat
- %TEMP%\~ip.tmp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\whatismyip[1].551664887
- %TEMP%\aut6.tmp
- %TEMP%\aut1.tmp
- %TEMP%\mss\Up.dateK
- %TEMP%\aut2.tmp
- %TEMP%\$inst\2.tmp
- %TEMP%\$inst\temp_0.tmp
- <SYSTEM32>\wmup.exe
- %TEMP%\mss\Wup.exe
- %TEMP%\mss\wsmsss.exe
- %TEMP%\aut5.tmp
- %TEMP%\mss\svhost.exe
- %TEMP%\aut3.tmp
- %TEMP%\mss\rnns.exe
- %TEMP%\aut4.tmp
Deletes the following files:
- %TEMP%\7.tmp\rnns.bat
- %TEMP%\aut6.tmp
- %TEMP%\aut5.tmp
- %TEMP%\8.tmp\rnns.bat
- %TEMP%\mss\Up.dateK
- %TEMP%\~ip.tmp
- %TEMP%\aut1.tmp
- %TEMP%\$inst\2.tmp
- %TEMP%\$inst\temp_0.tmp
- %TEMP%\aut4.tmp
- %TEMP%\aut3.tmp
- %TEMP%\aut2.tmp
Network activity:
Connects to:
- 'www.wh###smyip.com':80
- 'ch####p.dyndns.org':80
- 'cs####.batcave.net':80
TCP:
HTTP GET requests:
- www.wh###smyip.com/automation/n09230945.asp
- www.wh###smyip.com/?rn########################################
- cs####.batcave.net/Up.dateN
- ch####p.dyndns.org/?rn#########################################
UDP:
- DNS ASK ch####p.dyndns.org
- DNS ASK www.wh###smyip.com
- DNS ASK cs####.batcave.net
- '<Private IP address>':1036
- '<Private IP address>':1035
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
